Tubular-spoke wheel



IVI. LAGHI/IAN.

TUBULAR SPOKE WHEEL. APPLICATION FILED MAY 31, 191s.

Patented May i?, 1921.

section-or suit-able length of channel bar MAURICE LACHMAN, or NNW YORK, Y., AssIeNOn, BY MEsNE iissioNmENrs, 'ro

"-BETHLEHEM STEEL COMPANY; or BETHLEHEM, PENNSYLVANIA, A CORPORATION orv PENNSYLVANIA.

"To all wiz/omit may concern:

' Bezit known that I, MAURICE LAGHMAN, -a citizen of 'the United States, and a resi. dentofl vNew York, inv the' county of New 1,York andState of New York, have invented' "certain, new anduseful Improvements in TnbuIai'QSpOke l/Vheels, of which the following'is' aspe'cification.

invention relates tothe construction 1ofin'etalwheelswherein tlie rim and 'spokes a re f integral. i The object of my invention is to permit theiise `of ordinary commercial forms of channel lbar or beam in the construction of a wheel ofthe character mentioned by uti- 'lizingthe side of a bar oi' bearn as the tread or rim andthe floor' or bottom of the channelfbalr as the spokesl or web part of said wheel. f

In =carrying out vmy invention yI take a sufficient to constitute, by its edge', 4the rim ol the'whecl and cut or slit 'the floor or base of the beam transversely to the edge to f oi'in 'it into divisions suitable for use as thespokes.

of the wheel when the divided bar or Abeam is bent in such manner lthat the edge will form the circular rim and the extreme ends of the divisions, designed f'oi'- they spokes` will be caused to convergeV in the hub part at ltheir extremities. -K

In carrying' out my invention it is prefer: able to divide the base or floor of the chalinel bar inwardly from both edges to permit the utilization of each edge as the rim or part of the. rim of thewlieel. f-

yMy invention consistsessentially in a construction ot' whcel having the characteristics above stated and further consists in the irn.

'proved form'of `wheel wherein tWosections ofchanuel bar, prepared as 'above stated, are

placed hack to back and secured together so y that the rim of the wheel willbe formed of the sides and the spokes will be formed of thev divided portions of the door or base' oftwo channel bars or portionsof channel bar, the two sections of bar beingl suitably welded or otherwise secured together to hold vthem in fixed relation.V iny the completed Y f vas to their-edge, and having the Aintegra-l mUBULAR-'SPOKE WHEEL.

Specification of Letters Patent.

spolies of the `vWheel consistingof the-di visions of the floor stamped to form longi:

Patentediuay W192i. Application filed May ai, 1919. 'serial No. 301,023.

tudinalgrooves, said divisions, inthe assembled wheel, meeting edge to edge to make in` t,

effect al tubular spoke. i

In the accompanying drawings: ,I A- igure 1 is a crossfsectionl of a channel bar orv beam suitable for use` in carrying out my invention. y f: Fig. 2 is a side elevation of a seotionor portion of said' bar'suitablycut or slit in its flooror base for forming the wheel by bends.' `ing the edges into the circumference of the rim andfthereby bringing the divi/sions of l the" floor or base'into suitable assemblyor relation at .the hub part of the WheeLv Fig. 3 is a side elevationof a portion of the complete wheel." il

Fig. 4 isa 'cross-sectionon the line 4-4' Fig. 3 through the outer portion of the wheel. A

. Fig. 5 is a cross-section through one of the spokesof the Wheel.

Referring to Fig. 1,

I have shown a sectionviof channel or U bar or beam suitable for i A- i sg use in carrying out my invention.' To con@v struct the wheel from such a section of bar a length thereof istaken suflicient to provide y in the flange or edge 2 or 2 a length prefer'a ably sufficient to'embrace the Whole circumference of the wheel when said flange or edge is bent around to form'said rim. yThe base. or floor part 8 is then cutjor slit to provide the spokes 4 as shown in Fig.A 2, said spokes 4 Vextending fromk and being integral vwith the one edge or flange 2 While similar spokes 4 extend from the llange or edge 2', thus utilizing both edges ofthe bar in the construction of-the' rim' of the wheel. Preferablythe ends of the'spokes are cut out on lines 5 which' in th finished wheel are radial lines radiating. from the Wheel center p and which are adapted to abut against the similar edges of adjoining spokes tO fill out vthehub Part' and make a practically` con-V tinuous circumferential metal hub member.

4Also the inner ed'ge -6 of each spoke part may be curved lto follow the contour of the hub-barrel and toscat ,on the same. The portions 7 indicate the waste material; i

'The blank having kbeen cut: as indicated,' the two sides may evidently be-drawnapartand veach half may be 'utilized' inthe conA I struction of the wheel'. Preferably I utilize \\"heel said parts being placed back to back as indicated in Fig. 4 and being properly secured together, as for instance by welding at themfpoint indicated at 10, as well at other parts as will be presently described.

Previously to assembling thev parts in the relation shown in Fig. 4, each part is bent so that the edge or flange 2 or 2' will describe the circumference of a circle, which is the circumference of the rim of the wheel, the eiect of so bending it being to also cause the inner ends ol the spoke parts 4 to con verge or become assembled in the hub portion. llaehyspoke of the completed wheel is preferably a tubular spoke. To produce the tubular spoke each vfiat portion of the floor or base of the channel bar constituting the spoke is provided with a longitudinal groove or channel formed therein by a suitable press or dim-said channel or groove being the eoncavity on they bottom olf' the baseer floor, so as to produce a eonvexity lor projection upward on the inner or upper side thereof andthereby permit the assembly of the spoke parts with their edges in Contact as described in the cross-section Fig. 5, and so as to make in eiilect the tubular spoke. The edges oi the two spoke. parts thus formed and assembled may be secured together at suitable points by welds or otherfmeans as indicated at the points 8.

That 1 claim as my invention is 1. A. metal wheel consisting of two sections of channel bar assembled back to back and each consisting of a lengt-h of bar having its floor part or base sit toform the spokes and its edge bent to the circumference sections assembled base to base, each'. said.

channel. bar section consisting o'fan edge or flange oi a channel bar bent to form the eircnmfcrence oi the rim and arranged beside one another in the completed wheel while the floor or base oi' each channel bar section consists ot divisions of said iioor constituting the spokes the inner ends of which arecansed to converge in the liub part by the bending oi the fianged part into the rim circumference.

4. 'A metal wheel consisting of two lengths of channel bar each consisting of one edge of said channel bar and divisions of the floor projecting therefrom to Jorln the spoke parts oi the wheel, said lengths being assembled and secured together base to base with the edges bent to the cirenmiirence oi the rim and the spoke parts converged in'the hub.

Signed at New York, in the county of New York and State ot' New York7 this 28th day ott/lay, A. 11,1919.

Mani-:ien Laren-MAN.

Witnesses If`. B. TowissnNn, lnnNE Leriiowrrz. 

